diff --git a/include/acpi/actbl2.h b/include/acpi/actbl2.h
index 9c674e03eb05..32467a7133c9 100644
--- a/include/acpi/actbl2.h
+++ b/include/acpi/actbl2.h
@@ -1529,6 +1529,12 @@ struct acpi_pptt_cache {
 	u16 line_size;
 };
 
+/* 1: Cache Type Structure for PPTT version 3 */
+
+struct acpi_pptt_cache_v1 {
+	u32 cache_id;
+};
+
 /* Flags */
 
 #define ACPI_PPTT_SIZE_PROPERTY_VALID       (1)	/* Physical property valid */
@@ -1538,6 +1544,7 @@ struct acpi_pptt_cache {
 #define ACPI_PPTT_CACHE_TYPE_VALID          (1<<4)	/* Cache type valid */
 #define ACPI_PPTT_WRITE_POLICY_VALID        (1<<5)	/* Write policy valid */
 #define ACPI_PPTT_LINE_SIZE_VALID           (1<<6)	/* Line size valid */
+#define ACPI_PPTT_CACHE_ID_VALID            (1<<7)	/* Cache ID valid */
 
 /* Masks for Attributes */